Color: Grey or fawn but with dark purple-brown blotches between the tubercles, dark grey on the varixes, aperture throat (including the inner lip callus) dark purple-brown between the orange or fawn denticles and lirae.

Whorls with two thick prominent tubercles between each pair of varixes and unusually long, projecting, previous posterior canals, other sculpture of three pairs of low spiral ribs becoming enlarged and gemmate where they form three bifid nodules on the varixes, outer lip with a crenulate edge, six pairs of inner denticles, parietal ridge moderate, parietal-columellar callus low and adherent, finely lirate throughout but with several thick, short plicae anteriorly, fasciole broad.